EP 0834221 A4 19991229 - APPARATUS AND METHOD FOR LOSSLESS WAVEFORM DATA COMPRESSION
Title (en)
APPARATUS AND METHOD FOR LOSSLESS WAVEFORM DATA COMPRESSION
Title (de)
VORRICHTUNG UND VERFAHREN ZUR VERLUSTLOSEN WELLENFORM-DATENKOMPRESSION
Title (fr)
EQUIPEMENT ET PROCEDE DE COMPRESSION, SANS PERTES, DE DONNEES DE FORMES D'ONDES
Publication
Application
Priority
- US 9607740 W 19960529
- US 49236995 A 19950619
Abstract (en)
[origin: WO9700558A1] A method and apparatus of compressing a data vector of a predetermined number of data points. The apparatus includes a memory (12) for storing the compressed data vector, a first comparator (14) for determining a largest and smallest data point of the data vector and a second comparator (14) for comparing the largest and smallest datapoint and when they are equal, causing a first data point to be stored in the memory (12) as the compressed data vector. The apparatus also includes a first processor (12) for determining a data field width necessary to uniquely describe a largest relative magnitude data point and a second processor (14) for storing the data points of the data vector as the compressed vector in data fields of memory (12) of the data field width. The apparatus also includes a comparator (14) and a register (14) for creating a difference vector of difference values of adjacent data points of the data vector, a first processor (14) for determining a data field width necessary to uniquely describe a largest magnitude difference value of the difference vector, and a second processor (14) for storing the difference points of the difference vector as the compressed vector in data fields of the memory (12) of the determined field width along with a magnitude and sign of the first data point of the data vector.
IPC 1-7
IPC 8 full level
G06T 9/00 (2006.01); G10L 19/00 (2013.01); H03M 7/30 (2006.01); H03M 7/36 (2006.01)
CPC (source: EP US)
G06T 9/005 (2013.01 - EP US); H03M 7/3053 (2013.01 - EP US)
Citation (search report)
- [X] US 4965754 A 19901023 - STANSFIELD PETER W [GB], et al
- [A] US 5307177 A 19940426 - SHIBATA HIDEAKI [JP], et al
- [A] US 4684923 A 19870804 - KOGA TOSHIO [JP]
- [A] EP 0524625 A2 19930127 - GEN INSTRUMENT CORP [US]
- [A] PATENT ABSTRACTS OF JAPAN vol. 1995, no. 06 31 July 1995 (1995-07-31)
- [A] PATENT ABSTRACTS OF JAPAN vol. 013, no. 445 (E - 829) 6 October 1989 (1989-10-06)
- See references of WO 9700558A1
Designated contracting state (EPC)
AT BE CH DE DK ES FI FR GB GR IE IT LI NL PT SE
DOCDB simple family (publication)
WO 9700558 A1 19970103; AU 5933596 A 19970115; EP 0834221 A1 19980408; EP 0834221 A4 19991229; JP H11514165 A 19991130; US 5602550 A 19970211
DOCDB simple family (application)
US 9607740 W 19960529; AU 5933596 A 19960529; EP 96916653 A 19960529; JP 50307697 A 19960529; US 49236995 A 19950619